That's the lottery of life .. some people (Keith Richards, Ringo, Paul etc), get away with fags, booze and drugs, living long after stopping the worst excesses. Others like George Harrison pop off prematurely with throat cancer - though he just escaped being murdered. I slagged off American gun culture, ironically it was a multiple stabbing with Harrison that nearly ended him - but the heavy smoking probably caught up with him. Yoko is in pretty poor health, but still goes on...